Nandy
Commander
- Joined
- Apr 10, 2004
- Messages
- 2,145
I have a Mercury 500 / 50 H.P. Four motor s/n 2479050 year of manufacture is probably 1968, it has thunderbolt ignition if I recall right.
Short story, I dipped the motor and my transom for less than a minute in the lake. I cleared the carbs from water. With the carbs and the sparkplugs out I shot some mix in to the power head carb holes and the plug holes then cranked the motor. Repeated that procedure a few times until I felt comfortable everything was lubricated. Put it all back, tried to crack the motor but it would crank very hard. As if the starter were not strong enough then the starter died after a couple tries. It really sounded as if the battery was bad, which the voltmeter sais it not and the charger says it was charged before we started working in the motor.
I have started this motor manually before, as recently as maybe not even 2 month ago and it would start manually without much problem. But I too was experiencing trouble getting it to start. When I pull in the rope it start moving then it gets real hard, like the compression was too much. At times it will feel as it kicked back and pull back the string.
I took all the sparkplugs out and did a compression test. All of the cylinders top at 125. Also, without the plugs in it is very easy to turn by hand or with the starter.
I got the rebuilt starter in today but the motor will not start. It will crank fine until I can hear the first combustion, after that it starts to slow down while being cranck. I can also see how the flywheel kicks back at times. I had enough time to take the distributor off and open it up and it was wet. It did not have a pool on it, but it dripped a few drops.
Could that be the reason of the way the motor is behaving? Any input?
Since I have the distributor apart, Should I be doing any maintenance on it?
Thanks!
Short story, I dipped the motor and my transom for less than a minute in the lake. I cleared the carbs from water. With the carbs and the sparkplugs out I shot some mix in to the power head carb holes and the plug holes then cranked the motor. Repeated that procedure a few times until I felt comfortable everything was lubricated. Put it all back, tried to crack the motor but it would crank very hard. As if the starter were not strong enough then the starter died after a couple tries. It really sounded as if the battery was bad, which the voltmeter sais it not and the charger says it was charged before we started working in the motor.
I have started this motor manually before, as recently as maybe not even 2 month ago and it would start manually without much problem. But I too was experiencing trouble getting it to start. When I pull in the rope it start moving then it gets real hard, like the compression was too much. At times it will feel as it kicked back and pull back the string.
I took all the sparkplugs out and did a compression test. All of the cylinders top at 125. Also, without the plugs in it is very easy to turn by hand or with the starter.
I got the rebuilt starter in today but the motor will not start. It will crank fine until I can hear the first combustion, after that it starts to slow down while being cranck. I can also see how the flywheel kicks back at times. I had enough time to take the distributor off and open it up and it was wet. It did not have a pool on it, but it dripped a few drops.
Could that be the reason of the way the motor is behaving? Any input?
Since I have the distributor apart, Should I be doing any maintenance on it?
Thanks!